Filed with the U.S. Securities and Exchange Commission on April 9, 2014

1933 Act Registration File No. 033-12213

1940 Act File No. 811-05037

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM N-1A

REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933

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Pre-Effective Amendment No.

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Post-Effective Amendment No.

570

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and/or

REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940

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Amendment No.

571

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(Check appropriate box or boxes.)

PROFESSIONALLY MANAGED PORTFOLIOS

(Exact Name of Registrant as Specified in Charter)

615 East Michigan Street

Milwaukee, WI 53202

(Address of Principal Executive Offices, including Zip Code)

Registrant’s Telephone Number, including Area Code: (626) 914-7363

Elaine E. Richards, Esq.

Professionally Managed Portfolios

2020 E. Financial Way, Ste. 100

Glendora, CA 91741

(Name and Address of Agent for Service)

Copy to:

Domenick Pugliese, Esq.

Paul Hastings LLP

Park Avenue Tower

75 East 55th Street

New York, NY 10022

It is proposed that this filing will become effective (check appropriate box)

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immediately upon filing pursuant to paragraph (b)

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On (date) pursuant to paragraph (b)

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60 days after filing pursuant to paragraph (a)(1)

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on (date) pursuant to paragraph (a)(1)

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75 days after filing pursuant to paragraph (a)(2)

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on (date) pursuant to paragraph (a)(2) of Rule 485.

If appropriate, check the following box:

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This post-effective amendment designates a new effective date for a previously filed post- effective amendment.

Explanatory Note: This Post-Effective Amendment No. 570 to the Registration Statement of Professionally Managed Portfolios (the “Trust”) on Form N-1A hereby incorporates Parts A, B and C from the Trust’s PEA No. 568 on Form N-1A filed on March 25, 2014. This PEA No. 570 is filed for the sole purpose of submitting the XBRL exhibit for the risk/return summary first provided in PEA No. 568 to the Trust’s Registration Statement for its series: the GoodHaven Fund.

SIGNATURES

Pursuant to the requirements of the Securities Act of 1933, as amended, and the Investment Company Act of 1940, as amended, the Registrant certifies that it meets all of the requirements for effectiveness of this registration statement under Rule 485(b) under the Securities Act and has duly caused this Post-Effective Amendment No. 570 to its Registration Statement on Form N-1A to be signed below on its behalf by the undersigned, duly authorized, in the City of Glendora and State of California, on April 9, 2014.

Professionally Managed Portfolios

By: /s/ Elaine E. Richards

Elaine E. Richards

President

Pursuant to the requirements of the Securities Act of 1933, as amended, this Post-Effective Amendment No. 570 to its Registration Statement has been signed below by the following persons in the capacities and on the dates indicated.